Leonardi, G. 1920 . Monografia delle cocciniglie Italiane. Della Torre Portici 555 pp.

Notes: Introductory keys and descriptions for 8 subfamilies, 51 genera, and 144 scale insects, including Trabutina leonardi Silvestri, n. sp. (p. 451-456); detailed descriptions of 3 lecanine coccids.